Bob Weir David Livingston/Getty Images for NAMM Share on Facebook Share on X Google Preferred Share to Flipboard Show additional share options Share on LinkedIn Share on Pinterest Share on Reddit Share on Tumblr Share on Whats App Send an Email Print the Article Post a Comment Bob Weir, the unassuming singer, songwriter and nuanced rhythm guitarist known as the "other" founding member of the Grateful Dead, has died, his family announced Saturday on Instagram. He was 78. Weir "transitioned peacefully, surrounded by loved ones, after courageously beating cancer as only Bobby could.